EP 2283169 B1 20140507 - SEGMENTED THERMAL BARRIER COATING
Title (en)
SEGMENTED THERMAL BARRIER COATING
Title (de)
SEGMENTIERTE WÄRMEDÄMMSCHICHT
Title (fr)
REVÊTEMENT ISOLANT THERMIQUE SEGMENTÉ
Publication
Application
Priority
- US 2009000981 W 20090217
- US 10146008 A 20080411
- US 23893908 A 20080926
Abstract (en)
[origin: US2009017260A1] A ceramic thermal barrier coating (TBC) (18) having first and second layers (20, 22), the second layer (22) having a lower thermal conductivity than the first layer for a given density. The second layer may be formed of a material with anisotropic crystal lattice structure. Voids (24) in at least the first layer (20) make the first layer less dense than the second layer. Grooves (28) are formed in the TBC (18) for thermal strain relief. The grooves may align with fluid streamlines over the TBC. Multiple layers (84, 86,88) may have respective sets of grooves (90), Preferred failure planes parallel to the coating surface (30) may be formed at different depths (A1, A2, A3) in the thickness of the TBC to stimulate generation of a fresh surface when a portion of the coating fails by spalling. A dense top layer (92) may provide environmental and erosion resistance.
IPC 8 full level
C23C 30/00 (2006.01); C23C 28/00 (2006.01); F01D 5/28 (2006.01); F01D 11/12 (2006.01)
CPC (source: EP US)
C23C 4/18 (2013.01 - EP US); C23C 28/042 (2013.01 - EP US); C23C 28/048 (2013.01 - EP US); C23C 28/3215 (2013.01 - EP US); C23C 28/345 (2013.01 - EP US); C23C 28/3455 (2013.01 - EP US); C23C 28/36 (2013.01 - EP US); C23C 30/00 (2013.01 - EP US); F01D 5/288 (2013.01 - EP US); F01D 11/122 (2013.01 - EP US); F05D 2230/13 (2013.01 - EP US); F05D 2300/21 (2013.01 - EP US); Y10T 428/24521 (2015.01 - EP US); Y10T 428/249953 (2015.04 - EP US); Y10T 428/249967 (2015.04 - EP US); Y10T 428/24997 (2015.04 - EP US); Y10T 428/249981 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2009017260 A1 20090115; US 8357454 B2 20130122; EP 2283169 A1 20110216; EP 2283169 B1 20140507; WO 2009126194 A1 20091015
DOCDB simple family (application)
US 23893908 A 20080926; EP 09730755 A 20090217; US 2009000981 W 20090217